EP3310532B1 - Procédé pour réaliser des articles abrasifs - Google Patents

Procédé pour réaliser des articles abrasifs Download PDF

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Publication number
EP3310532B1
EP3310532B1 EP16812269.5A EP16812269A EP3310532B1 EP 3310532 B1 EP3310532 B1 EP 3310532B1 EP 16812269 A EP16812269 A EP 16812269A EP 3310532 B1 EP3310532 B1 EP 3310532B1
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EP
European Patent Office
Prior art keywords
abrasive
particle
abrasive particles
distribution tool
walls
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP16812269.5A
Other languages
German (de)
English (en)
Other versions
EP3310532A4 (fr
EP3310532A1 (fr
Inventor
Geoffrey I. WILSON
Mark R. Nyberg
Jeffrey S. THOMFORD
Ernest L. Thurber
Brian G. Koethe
Charles C. DRANGE
Robert J. HNATYK
John T. Boden
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
3M Innovative Properties Co
Original Assignee
3M Innovative Properties Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 3M Innovative Properties Co filed Critical 3M Innovative Properties Co
Priority to PL16812269T priority Critical patent/PL3310532T3/pl
Publication of EP3310532A1 publication Critical patent/EP3310532A1/fr
Publication of EP3310532A4 publication Critical patent/EP3310532A4/fr
Application granted granted Critical
Publication of EP3310532B1 publication Critical patent/EP3310532B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D11/00—Constructional features of flexible abrasive materials; Special features in the manufacture of such materials
    • B24D11/02—Backings, e.g. foils, webs, mesh fabrics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D11/00—Constructional features of flexible abrasive materials; Special features in the manufacture of such materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D11/00—Constructional features of flexible abrasive materials; Special features in the manufacture of such materials
    • B24D11/001—Manufacture of flexible abrasive materials
    • B24D11/005—Making abrasive webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D11/00—Constructional features of flexible abrasive materials; Special features in the manufacture of such materials
    • B24D11/08—Equipment for after-treatment of the coated backings, e.g. for flexing the coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D18/00—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
    • B24D3/02—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent
    • B24D3/20—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially organic
    • B24D3/28—Resins or natural or synthetic macromolecular compounds
    • B24D3/30—Resins or natural or synthetic macromolecular compounds for close-grained structure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
    • B24D3/34—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties
    • B24D3/346—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties utilised during polishing, or grinding operation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D18/00—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
    • B24D18/0072—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for using adhesives for bonding abrasive particles or grinding elements to a support, e.g. by gluing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D2203/00—Tool surfaces formed with a pattern
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K3/00—Materials not provided for elsewhere
    • C09K3/14—Anti-slip materials; Abrasives
    • C09K3/1409—Abrasive particles per se
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K3/00—Materials not provided for elsewhere
    • C09K3/14—Anti-slip materials; Abrasives
    • C09K3/1436—Composite particles, e.g. coated particles

Definitions

  • the present disclosure relates to abrasive articles. More particularly, it relates to methods for arranging abrasive particles on a backing as part of the manufacture of an abrasive article.
  • coated abrasive articles have an abrasive layer secured to a backing.
  • the abrasive layer comprises abrasive particles and a binder that secures the abrasive particles to the backing.
  • One common type of coated abrasive article has an abrasive layer comprised of a make coat or layer, a size coat or layer, and abrasive particles.
  • a make layer precursor comprising a curable make resin is applied to a major surface of the backing.
  • Abrasive particles are then at least partially embedded into the curable make resin, and the curable make resin is at least partially cured to adhere the abrasive particles to the major surface of the backing.
  • a size layer precursor comprising a curable size resin is then applied over the at least partially cured curable make resin and abrasive particles, followed by curing of the curable size resin precursor, and optionally further curing of the curable make resin.
  • abrasive particles to a major face of a backing construction is oftentimes accomplished via drop coating technique in which a bulk supply of the abrasive particles are fed through a hopper and fall onto the major face (e.g., onto or into the make layer precursor) under the force of gravity.
  • a spatial orientation of the abrasive particles upon contacting the major face is entirely random in all directions.
  • electrostatic coating e-coat
  • electrostatic field to propel the abrasive particles vertically against the force of gravity onto the major face (e.g., onto or into the make layer precursor).
  • electrostatic coating it is possible to effect the orientation of the abrasive particles in one direction such that each abrasive particle's elongated dimension is substantially erect (standing up) with respect to the backing surface.
  • electrostatic coating is more expensive than drop coating, and may not be viable with all types of abrasive particles (e.g., it can be difficult to consistently electrostatically coat relatively large abrasive particles).
  • DE 10 2013 212609 describes a method for producing an abrasive article in which abrasive grains are sprinkled onto at least one abrasive backing, wherein the abrasive grains, supported by at least one alignment aid, are spread at least partially aligned.
  • US 1 857 340 concerns a method of making an abrasive article having a backing, an abrasive facing and a binder, wherein the abrasive material is applied in determinate quantities to the backing, which is vibrated so that a portion of the abrasive material is thrown up and subsequently settles back onto the backing.
  • Some aspects of the present disclosure are directed toward a method of making an abrasive article.
  • the method includes loading abrasive particles to a distribution tool.
  • the distribution tool includes a plurality of walls defining a plurality of slots. Each of the slots is open to a lower side of the distribution tool.
  • the loaded abrasive particles are distributed from the distribution tool on to a major face of a backing construction web located immediately below the lower side and moving relative to the distribution tool. At least a majority of the abrasive particles distributed from the distribution tool undergo a particle orientation sequence in which each particle first enters one of the slots.
  • the particle then passes partially through the corresponding slot such that a first portion of the abrasive particle is beyond the lower side and in contact with the major face, and a second portion of the abrasive particle is within the slot.
  • the particle orientation sequence then includes the abrasive particle remaining in simultaneous contact with at least one of the walls and the major face for a dwell period during which the backing construction web moves relative to the distribution tool.
  • the method includes a plurality of the abrasive particles being simultaneously located within, and grossly aligned relative to, a respective one of the slots.
  • the orientation sequence includes the abrasive particle experiencing a natural re-orientation (e.g., tilting) following initial contact with the major face and while the second portion is within the confines of the corresponding slot.
  • the slot width is less than a nominal height and nominal length of the abrasive particles, but is greater than a nominal thickness.
  • the system includes a distribution tool and a web feeding device.
  • the distribution tool includes a plurality of walls defining a plurality of slots. Each of the slots is open to a lower side of the distribution tool.
  • the web feeding device is configured to manipulating a backing construction web in a machine direction immediately below the lower side of the distribution tool.
  • Each of the slots defines a length, a depth and a width. The slot length is greater than the slot depth, and the slot depth is greater than the slot width.
  • the distribution tool is arranged relative to the web feeding device such that for each of the slots, the slot depth is substantially perpendicular to the machine direction, the slot length is substantially parallel to the machine direction, and the slot width is substantially orthogonal to the slot depth and length.
  • FIG. 1 illustrates portions of a system 20 for manufacturing abrasive articles in accordance with the method of the present disclosure, including a distribution device 22 along with other components or devices commonly employed in the manufacture of abrasive articles.
  • the manufacture of abrasive articles conventionally includes structures and mechanisms (e.g., rollers, conveyor belts, etc.) for moving a backing construction web 24 along a path of travel or machine direction 26.
  • the backing construction web 24 can assume various forms, and in some embodiments includes a backing 28 to which a make coat precursor resin 30 (or other resin or adhesive) has been applied.
  • the backing 28 is advanced past a coater 32 that applies the make coat precursor resin 30 on a major surface 34 of the backing 28 thereby creating the backing construction web 24 (e.g., a coated backing).
  • the backing construction web 24 e.g., a coated backing.
  • multiple coatings can be applied to the backing 28 to generate the backing construction web 24 as delivered to the distribution tool 22; in yet other embodiments, the backing construction web 24 consists of the backing 28 alone (i.e., prior to interacting with the distribution device 22, the backing 28 is not subjected to a resin coating operation).
  • Abrasive particles 36 (a size of which is greatly exaggerated in FIG.
  • the backing construction web 24 exits the distribution device 22 and is optionally subjected to further processing (e.g., application of a size coat 42, application of additional abrasive particles by conventional means (e.g., e-coat), application of a grinding aid, application of a supersize coat, curing, cutting, etc.) to produce a final abrasive article, such as a coated abrasive article.
  • further processing e.g., application of a size coat 42, application of additional abrasive particles by conventional means (e.g., e-coat), application of a grinding aid, application of a supersize coat, curing, cutting, etc.
  • the distribution device 22 is configured to effectuate gross biased orientation and alignment of at least a majority of the abrasive particles 36 as applied and subsequently bonded to the major face 38.
  • a distribution tool 50 in accordance with principles of the present disclosure and useful with or as the distribution device 22 ( FIG. 1 ) are shown in simplified form in FIG. 2A-2C .
  • the distribution tool 50 includes a plurality of walls 60.
  • the walls 60 are spaced from one another such that a slot 62 is defined between immediately adjacent ones of the walls 60.
  • a size of the slots 62 relative to a size of the walls 60 is exaggerated in the views.
  • the distribution tool 50 is configured to distribute abrasive particles (not shown) from a lower side 64 (referenced generally in FIGS. 2A and 2B ) thereof in a manner that grossly orients and aligns the abrasive particles.
  • the walls 60 are arranged such that the slots 62 have a substantially similar width Ws (e.g., the width Ws of the slots 62 varies from one another by no more than 10%) that is selected in accordance with expected nominal dimensions of the abrasive particles so as to grossly bias the abrasive particles to a spatial orientation at the lower side 64.
  • the walls 60 are elongated, substantially planar (e.g., within 10% of a truly planar construction) bodies formed of a relatively rigid material (e.g., metal, plastic, ceramic, etc.).
  • the walls 60 can be maintained relative to one another in various fashions.
  • the distribution tool 50 can include mounting bodies 70a, 70b assembled to opposite ends, respectively, of each of the walls 60.
  • the mounting bodies 70a, 70b are illustrated in FIG. 2C and are omitted from the view of FIG. 2A ; one of the mounting bodies 70b is shown with phantom lines in FIG. 2B .
  • the mounting bodies 70a, 70b maintain the walls 60 in a substantially parallel manner (e.g., the walls 60 are arranged to be within 10% of a truly parallel relationship with one another). Due to their substantially rigid nature, the walls 60 self-maintain the substantially parallel arrangement dictated by the mounting bodies 70a, 70b upon final assembly and during use.
  • the mounting bodies 70a, 70b may cover or encompass a portion of each of the walls 60, with a linear distance between the mounting bodies 70a, 70b serving to define an effective length Lw of each of the walls 60, as well as a length L S of each of the slots 62.
  • the length L S of each of the slots 62 is selected in accordance with expected nominal dimensions of the abrasive particles (not shown) with which the distribution tool 50 will be used as described in greater detail below, including the slot length Ls being sufficient to simultaneously receive a multiplicity of the abrasive particles.
  • Each of the walls 60 has a height Hw (labeled as Hwa and H Wb in FIG. 2B for reasons made clear below) defined as the linear distance between opposing, first and second edges 80, 82 (labeled as 80a, 80b, 82a, 82b in FIG. 2B ).
  • the elongated shape of each of the walls 60 includes the effective wall length L W being greater than the corresponding wall height Hw (with the wall height Hw being defined as a linear distance between the opposing edges 80, 82 of the corresponding wall 60).
  • a depth Ds of each slot 62 is defined by the height(s) Hw of the immediately adjacent walls 60 defining the slot 62, and is selected in accordance with expected nominal dimensions of the abrasive particles (not shown) with which the distribution tool 50 will be used, as well as other end-use parameters, as described below.
  • the wall heights Hw are not identical.
  • the plurality of walls 60 can include alternately located first walls 60a and second walls 60b.
  • the height Hwa of the first walls 60a is greater than the height H Wb of the second walls 60b.
  • the walls 60a, 60b are arranged such that the corresponding first edges 80a, 80b are all substantially aligned with one another at the lower side 64.
  • the second edge 82b of the second walls 60b is off-set from the second edge 82a of the first walls 60a in a direction of the lower side 64.
  • three or more differing wall heights H W can be incorporated into the distribution tool 50; in yet other embodiments, the walls 60 can all have an identical height.
  • the distribution tool 50 is configured such that upon final assembly and use as part of the abrasive article manufacturing system 20 ( FIG. 1 ), abrasive particles (not shown) will become loaded into the slots 62, and subsequently be caused to move relative to the slots 62 in a direction of the slot length L S .
  • the distribution tool 50 can be viewed has providing a length direction D L , commensurate with the slot lengths L S , from an entrance side 90 to an exit side 92.
  • FIG. 2B is an end view of the exit side 92 and reflects that the mounting body 70b (otherwise assembled at the exit side 92) terminates above (relative to the orientation of FIG. 2B ) the first edge 80a, 80b of the walls 60.
  • the mounting body 70b does not extend to the lower side 64 of the distribution tool 50, and a portion of the each of the slots 62 is open at the exit side 92 relative to the mounting body 70b for reasons made clear below.
  • the mounting body 70a at the entrance side 90 may or may not have a similar relationship relative to the first edges 80a, 80b, and can alternatively extend to the lower side 64.
  • the distribution tool 50 is illustrated as including ten of the walls 60, any other number, either greater or lesser, is equally acceptable. In more general terms, the number of walls 60 provided with the distribution tool 50 is selected as a function of the desired slot width Ws and a dimension (e.g., cross-web width) of the backing construction web 24 ( FIG. 1 ) as described in greater detail below. In yet other embodiments, the distribution device 22 ( FIG. 1 ) can include two or more of the distribution tools 50 assembled in series to a frame or similar structure.
  • FIGS. 3A-3C Incorporation of the distribution tool 50 as part of the abrasive article manufacturing system 20 is generally reflected by FIGS. 3A-3C .
  • the distribution tool 50 is located immediately adjacent (e.g., slight above by a distance described in greater detail below) the backing construction web 24.
  • the elongated walls 60 (and thus the slots 62) are substantially aligned (e.g., within 10% of a truly aligned relationship) with the machine direction 26 (e.g., the length direction D L is substantially aligned or parallel with (e.g., within 10% of a truly aligned or parallel relationship) the machine direction 26.
  • a supply 100 (referenced generally) of the abrasive particles 36 is loaded onto the distribution tool 50 at or adjacent the entrance side 90.
  • Individual ones of the abrasive particles 36 will enter a respective one of the slots 62 only upon achieving a gross spatial orientation dictated by dimensions of the slots 62.
  • a first abrasive particle 36a in FIGS. 3A-3C is spatially oriented so as to enter the slot 62a, whereas a spatial orientation of a second abrasive particle 36b prevents entry into any of the slots 62.
  • loading of the supply 100 can include pouring or funneling (e.g., via vibratory feeder, belt driven drop coater, etc.) a large number of the abrasive particles 36 on to the distribution tool 50 under the force of gravity, with individual ones of the so-loaded abrasive particles 36 randomly assuming any spatial orientation.
  • the individual abrasive particles 36 repeatedly contact one or more of the walls 60, they deflect and assume a new spatial orientation, eventually becoming generally aligned with and assuming a spatial orientation appropriate for entering one of the slots 62.
  • the distribution device 22 FIG.
  • the abrasive particles 36 can vibrate around on surfaces of the distribution tool 50 until they obtain a suitable orientation and fall through one of the slots 62.
  • the direction of vibration can be in a plane of the walls 60; random vibration may reduce the mass flow rate of the abrasive particles 36 through the distribution tool 50 and may knock many of the applied abrasive particles 36 over as they exit the distribution tool 50.
  • abrasive particles 36 are naturally encouraged to assume the spatial orientation appropriate for entering one of the slots 62 thereby reducing "bridging" of the abrasive particles 36 at the top of the distribution tool 50 and increasing the mass flow rate of the abrasive particles 36 through the distribution tool 50.
  • a large number of abrasive particles 36 can be disposed within individual one of the slots 62 at any one point in time.
  • the so-arranged abrasive particle 36 passes through the corresponding slot 62, falls on to the backing construction web 24 and is at least partially bonded thereto (e.g., the third abrasive particle 36c identified in FIGS. 3A and 3B ).
  • the lower side 64 of the distribution tool 50 is spaced from the backing construction web 24 by a gap G that is less than a maximum dimension(s) of the abrasive particles 36.
  • a portion of the applied abrasive particles 36c remains within the corresponding slot 62.
  • the backing construction web 24 is driven relative to the distribution tool 50 in the machine direction 26, such that the applied abrasive particles 36c travel relative to the distribution tool 50 with movement of the backing construction web 24, freely sliding within the corresponding slot 62.
  • one or more of the walls 60 of the distribution tool 50 support the applied abrasive particles 36c, preventing the applied abrasive particles 36c from experiencing an overt change in spatial orientation (e.g., the applied abrasive particles 36c are preventing from overtly tipping or rotating in a direction perpendicular to the corresponding slot 62).
  • abrasive particles 36 Upon traveling beyond the exit side 92, the abrasive particles 36 are now more firmly bonded to the backing construction web 24 (e.g., abrasive particles 36d identified in FIGS. 3A and 3B ), and maintain the gross biased orientation and alignment dictated by the distribution tool 50.
  • methods of the present disclosure include the applied abrasive particles 36c being in simultaneously contact with the backing construction web 24 and one (or more) of the walls 60 of the distribution tool 50 over a dwell period in which the applied abrasive particle 36c is caused to travel the length of the distribution tool 50 and progress beyond the exit side 92.
  • some of the abrasive particles 36 included with the supply 100 dispensed or loaded on to the distribution tool will not experience the gross bias orientation and alignment sequence or steps described above.
  • individual ones of the abrasive particles can defect or "bounce" off the walls 60 in a direction of the exit side 92; invariably, individual ones of the abrasive particles 36 will deflect or bounce off of the walls 60, beyond the exit side 92 and onto the backing construction web 24.
  • FIG. 3B illustrates one example of a random abrasive particle 36e that has secured on to the backing construction web 24 without passing through one of the slots 62.
  • methods of the present disclosure include at least a majority, optionally at least 75%, 85%, 90% or 95%, of the abrasive particles 36 included with the supply 100 as loaded to the distribution tool 50 undergoing a particle orientation sequence in which the abrasive particle 36: 1) enters one of the slots 62; 2) passes partially through the corresponding slot 62 such that a first portion of the abrasive particle is beyond the lower side 64 and in contact with the major face 38 of the backing construction web 24 and a second portion is within the slot 62; and 3) remains in simultaneous contact with at least one of the walls 60 and the major face 38 for a dwell period in which the backing construction web 24 moves relative to the distribution tool 50.
  • Less than 100% of the abrasive particles 36 included with the supply 100 as loaded onto the distribution tool 50 undergo the particle orientation sequence in some embodiments.
  • FIG. 4 is a generic, non-limiting example of the abrasive particle 36, the exterior shape of which defines a particle maximum length, maximum height and maximum thickness L P , H P , T P dimensions that represent maximum dimensions of the abrasive particles 36 in three orthogonal planes.
  • the particle maximum length, height and thickness L P , H P , T P are a function of a shape of the abrasive particle 36, and the shape may or may not be uniform.
  • the present disclosure is in no way limited to any particular abrasive particle shape, dimensions, type, etc., and several exemplary abrasive particles useful with the present disclosure are described in greater detail below.
  • the "height" of the abrasive particle 36 may more conventionally be referred to as a "width".
  • the abrasive particle 36 is shown in FIG. 4 as arbitrarily having a rectangular prism shape, with opposing major faces 104 (one of which is visible), opposing major side faces 106 (one of which is visible), and opposing minor side faces 108 (one of which is visible).
  • any abrasive particle can be described as providing the particle maximum length L P as the largest dimension in any one plane, the particle maximum height H P as being the largest dimension in any plane orthogonal to the plane of the maximum length L P , and the maximum thickness T P as being the largest dimension in a third plane orthogonal to the planes of the maximum length L P and height H P .
  • the particle maximum length L P is greater than or equal to the particle maximum height H P
  • the particle maximum height H P is greater than or equal to the particle maximum thickness T P .
  • Abrasive particles useful with the present disclosure can have circular or spherical geometries such that the terms "length", "height” or “thickness" are inclusive of diameter.
  • a shape of the abrasive particle 36 defines a centroid at which particle X P , Y P and Z P axes can be defined (the particle X P , Y P and Z P axes are orthogonal relative to one another).
  • the particle Z P axis is parallel with the maximum height H P
  • the Y P axis is parallel with the maximum length L P
  • the X P axis is parallel with the maximum thickness T P .
  • the particle X P , Y P , Z P axes are identified for the abrasive particle 36 as a standalone object independent of the backing construction web 24 ( FIG.
  • a "z-axis rotation orientation" of the abrasive particle 36 is defined by the particle's angular rotation about a z-axis passing through the particle and through the backing to which the particle is attached at a 90 degree angle to the backing.
  • the gross biased orientation effected by the distribution tools of the present disclosure entail dictating or limiting a spatial arraignment of the abrasive particle to a range of rotational orientations about the particle Z P axis and to a range of rotational orientations about the particle Y P axis; the gross biased orientation does not dictate or limit a rotational orientation about the particle X P axis.
  • FIG. 5A provides a top view of the abrasive particle 36 within one of the slots 62.
  • the opposing walls 60 limit a rotational orientation of the abrasive particle 36 about the Z P axis to a range reflected by phantom representations of the abrasive particle 36.
  • FIG. 5A provides a top view of the abrasive particle 36 within one of the slots 62.
  • the opposing walls 60 limit a rotational orientation of the abrasive particle 36 about the Z P axis to a range reflected by phantom representations of the a
  • FIG. 5B is an end view of the abrasive particle 36 within the slot 62.
  • Gross biased orientation includes the opposing walls 60 limiting a rotational orientation of the abrasive particle 36 about the Y P axis within a range reflected by phantom representations of the abrasive particle 36.
  • FIG. 5C is a side view of the abrasive particle 36 within the slot 62 (referenced generally) relative to one of the wall 60 (it being understood that the opposing wall of the slot 62 is not shown).
  • the abrasive particle 36 can freely assume any rotational orientation about the X P axis (one possible rotational orientation about the X P axis is represented in phantom in FIG. 5C ).
  • the abrasive particle 36 may be able to "fit" within the slot 62 such that the particle Y P and Z P axes are rotated 90 degrees from the representations of FIGS. 5A and 5B in which the abrasive particle 36 is randomly arranged with the major side faces 106 parallel with the slot length Ls and the minor side faces 108 parallel with the slot depth D S .
  • FIGS. 6A-6C is another possible arrangement in which the minor side faces 108 are parallel with the slot length L S , and the major side faces 106 are parallel with the slot depth D S .
  • a gross biased orientation is achieved in which the abrasive particle is limited to a range of orientations about the particle's Y P and Z P axes; the abrasive particle 36 can assume any rotational orientation about the particle X P axis.
  • dimensions of the walls 60 and the slots 62 are selected as a function of expected geometry or dimensions of the abrasive particles 36 to be processed.
  • the dimensions of the walls 60 and the slots 62 are selected based upon the particle maximum length L P , maximum height H P , and maximum thickness T P of the abrasive particles to be processed (it being understood that a bulk supply of a particular abrasive particle will purport to contain identically sized and shaped abrasive particles; invariably, however, individual ones of the abrasive particles within the bulk supply will have dimensions that slightly vary from one another within an accepted tolerances; thus, when selecting dimensions for the walls 60 and the slots 62 for distributing the abrasive particles of the bulk supply as described in the present disclosure, the "dimensions" of any one abrasive particle of the bulk supply can be with reference to nominal dimension of the bulk supply).
  • Dimensions of the walls 60 and the slots 62 are generally configured such that the slot width Ws is less than at least the abrasive particle maximum length Lp, and optionally less than the abrasive particle maximum height H P , dictating that the abrasive particle 36 must achieve a gross biased orientation before entering and passing through one of the slots 62, with the walls 60 further serving to support the abrasive particle 36 in the biased orientation as described below.
  • the slot width W S can closely approximate the maximum thickness T P so as to dictate a more precise particle Z P axis and Y P axis rotation orientation of the applied abrasive particles 36 (i.e., as the slot width W S approaches the maximum thickness Tp, the range of possible Z P axis and Y P axis rotational orientations the abrasive particle 36 can assume and still "fit” in the slot 62 is reduced), in some embodiments, the slot width W S is greater than the maximum thickness Tp for enhanced throughput time (i.e., by providing a larger slot width Ws, abrasive particles 36 can randomly assume a larger range of Z P axis and Y P axis rotational orientations and still enter/pass through one of the slots 62, thereby making it "easier" for an individual abrasive particle 36 to obtain an appropriate spatial orientation and improving the mass flow rate of the abrasive particles 36 through the distribution tool 50), approaching, but not exceeding, the particle maximum length and maximum height L P
  • the slot width Ws can be 50 - 75% of the maximum height H P (so long as the calculated value is greater than the maximum thickness T P ).
  • the selected slot width Ws is a non-integer factor of the maximum thickness T P (i.e., the slot width Ws is not equal to the maximum thickness T P , 2T P , 3T P , etc.) to avoid clogging (e.g., were the slot width W S to be equal to two times the maximum thickness T P , two abrasive particles 36 could become aligned side-by-side each other and then collectively become lodged to the opposing walls 60 of one of the slots 62).
  • a width W T (identified in FIG. 2B ) between an adjacent pair of the taller walls 60a can be selected to be greater than the particle maximum length Lp and maximum height Hp.
  • a single abrasive particle 36 cannot span two "high" points (e.g., the second ends 82a of an adjacent pair of the taller walls 60a), greatly increasing the mass flow of the abrasive particles 36 through the distribution tool 50.
  • the slot depth D S is selected to approximate or be greater than at least the particle maximum height H P (or particle maximum length L P where the shape of the particular abrasive particle does not implicate a height differing from a length) so as to better ensure that individual ones of the abrasive particles 36 attain the desired gross biased orientation and are supported in this orientation as they traverse the corresponding slot 62.
  • the wall height H W is at least equal to the maximum particle height H P in some embodiments. Where the walls 60 have differing heights (e.g., with the non-limiting embodiment of FIGS.
  • the height H b of the second walls 60b is less than the height H a of the first walls 60a)
  • the height of the shortest wall 60 is at least equal to the maximum height Hp in some embodiments.
  • the slot depth D S can be less than the maximum particle height Hp.
  • Dimensions of the abrasive particles 36 can also be utilized to determine a size of the gap G between the lower side 64 of the distribution tool 50 and the backing construction web 24 as shown in FIG. 7 .
  • the gap G is sized so as to ensure that once in contact with the backing construction web 24, a portion of the abrasive particle 36 remains “within” the corresponding slot 62 (referenced generally in FIG. 7 , it being understood that in the view of FIG. 7 , the slot 62 is "hidden" behind the wall 60 otherwise visible in the illustration), supported by at least one of the corresponding walls 60.
  • the size of the gap G is 25 - 90% of the particle maximum height Hp, alternatively 50 - 75% of the particle maximum height H P .
  • the abrasive particle 36 has achieved the gross biased orientation dictated by the distribution tool 50, fallen along one of the slots 62, and become arranged on the backing construction web 24. Because the gap G is less that the particle maximum height H P , a first portion 110 of the abrasive particle 36 remains within the slot 62, and a second portion 112 is beyond the lower side 64.
  • the abrasive particle 36 is supported by at least one of the walls 60 (i.e., the first portion 110 contacts at least one of the walls 60) as the abrasive particle 36 traverses along the distribution tool 50 with movement of the backing construction web 24 in the machine direction 26.
  • the lower side 64 can be located in even closer proximity to the backing construction web 24, including being in contact with the major face 38.
  • particle maximum length, height and thickness L P1 , H P1 , T P1 are designated for one exemplary abrasive particle 200 shape in FIGS. 8A-8C .
  • a shape of the abrasive particle 200 is akin to an equilateral triangular prism, with FIG. 8A providing a top view, FIG. 8B an end view, and FIG. 8C a side view.
  • the maximum length L P1 and the maximum height H P1 are uniform across a thickness of the abrasive particle 200 (i.e., the abrasive particle 200 can be viewed as defining opposing major faces 202, 204; the maximum length and height L P1 , H P1 exist at both of the faces 202, 204).
  • the maximum height H P1 is known or can be calculated, and is less than the maximum length L P1 .
  • the maximum thickness T P1 is less than the maximum length and height L P1 , H P1 .
  • Side faces 206-210 of the abrasive particle 200 have an identical shape and size, and are perpendicular to the major faces 202, 204.
  • An abrasive article manufacturer may prefer that the abrasive particle 200 be applied to and retained at the major face 38 of the backing construction web 24 in an "upright" position as generally reflected by FIG. 9A (i.e., one of the side faces 206-210 of the abrasive particle 200 bears against or is embedded into the backing construction major face 38, as compared to a non-upright orientation in which one of the particle major faces 202, 204 is at the backing construction major face 38).
  • FIGS. 9A i.e., one of the side faces 206-210 of the abrasive particle 200 bears against or is embedded into the backing construction major face 38, as compared to a non-upright orientation in which one of the particle major faces 202, 204 is at the backing construction major face 38.
  • the distribution tool 50 can be configured to grossly bias the abrasive particle 200 to the desired upright position by forming the slot width W S to be less than the particle maximum length and height L P1 , H P1 , and greater than the maximum thickness T P1 , commensurate with the descriptions above.
  • the slot depth D S is selected to approximate or be greater than the maximum height H P1 so as to better ensure that individual ones of the abrasive particles 200 attain the desired gross biased orientation and are supported in this orientation as they traverse the corresponding slot 62.
  • the wall height H is at least equal to the particle maximum height H P1 in some embodiments.
  • the walls 60 have differing heights (e.g., with the non-limiting embodiment of FIGS. 2A-2C , the height H b of the second walls 60b is less than the height H a of the first walls 60a), the height of the shortest wall 60 is at least equal to the maximum particle height H P1 in some embodiments.
  • the slot depth D S can be less than the maximum height H P1 .
  • Dimensions of the abrasive particles 200 can also be utilized to determine a size of the gap G between the lower side 64 of the distribution tool 50 and the backing construction web 24 as shown in FIG. 9B .
  • the gap G is sized so as to ensure that once in contact with the backing construction web 24, a portion of the abrasive particle 200 remains "within” the corresponding slot 62 (referenced generally in FIG. 9B ), supported by at least one of the corresponding walls 60.
  • the size of the gap G is 50 ⁇ 75% of the particle maximum height H P1 .
  • a first abrasive particle 200a is identified in FIG. 9B .
  • the first abrasive particle 200a has achieved the gross biased orientation dictated by the distribution tool 50, fallen along one of the slots 62, and become arranged on the backing construction web 24 (i.e., the first side face 206 bears on or in the major face 38). Because the gap G is less that the particle maximum height H P1 , a first portion 220 of the abrasive particle 200a remains within the slot 62, and a second portion 222 is beyond the lower side 64. Thus, the abrasive particle 200a is supported by at least one of the walls 60 (i.e., the first portion 220 contacts at least one of the walls 60) as the abrasive particle 200a traverses along the distribution tool 50 with movement of the backing construction web 24 in the machine direction 26.
  • FIG. 9B further reflects that as the abrasive particles 200 initially drop or fall along one of the slots 62, rotational orientation about the particle X P axis ( FIG. 4 ) is effectively unconstrained, such that the abrasive particle 200 can initially contact the backing construction web 24 at a wide range of particle X P axis rotational orientations.
  • a second abrasive particle 200b is identified in FIG. 9B as initially contacting the backing construction web 24 at a skewed rotational orientation (i.e., none of the side faces 206-210 are parallel with the major face 38).
  • FIG. 9C represents a later point in time; with movement of the backing construction web 24, the abrasive particle 200b has now naturally attained a stable orientation in which the side face 206 is against or in the major face 38.
  • a portion of the abrasive particle 200b remains within the slot 62 (referenced generally), supported by at least one of the walls 60.
  • 9D reflects that the gross biased orientation effectuated by the distribution tool 50 limits the z-axis rotational orientation (i.e., the applied particle's 200 angular rotation about a z-axis passing through the particle 200 and through the backing 24 to which the particle 36 is attached at a 90 degree angle to the backing 24) exhibited by each of the attached abrasive particles 200 to a prescribed range, although the z-axis rotational orientations will not be identical for all of the abrasive particles 200.
  • the z-axis rotational orientation i.e., the applied particle's 200 angular rotation about a z-axis passing through the particle 200 and through the backing 24 to which the particle 36 is attached at a 90 degree angle to the backing 24
  • the particle maximum length, height and thickness L P2 , H P2 , T P2 are designated for another exemplary abrasive particle 250 shape in FIGS. 10A-10C .
  • the shape of the abrasive particle 250 is akin to an equilateral triangular tapered prism in which the particle maximum length L P2 is greater than the particle maximum height H P2 .
  • the tapered geometry across the thickness dictates that dimensions of the abrasive particle 250 at a first major face 252 differ from those at a second, opposing major face 254.
  • the maximum length L P2 and the maximum height H P2 are found at the second major face 254; while the first major face 252 has length and height dimensions (labeled as L minor , H minor ) the length and height of the abrasive particle 250 at the first major face 252 are less than those of the second major face 254, with the maximum length and height dimensions L P2 , H P2 existing or being measured at the second major face 254.
  • the maximum thickness T P2 is less than the maximum length and height L P2 , H P2 .
  • Side faces 256-260 of the abrasive particle 250 have an identical shape and size, and can be characterized as "sloping", defining a draft angle ⁇ relative to the first major face 252 and a base angle ⁇ relative to the second major face 254.
  • the abrasive particle 250 can assume any of the constructions described in US Publication No. 2010/0151196 entitled “Shaped Abrasive Particle With A Sloping Sidewall”..
  • An abrasive article manufacturer may prefer that the abrasive particle 250 be applied to and retained at the major face 38 of the backing construction web 24 in an "upright” position as generally reflected by an exemplary coated abrasive article 270 in FIG. 11A (i.e., one of the side faces 256-260 of each of the abrasive particles 250 bears against or is embedded into the backing construction major face 38, with the abrasive particle 250 having an overall "tipped” or “leaning” arrangements and covered with the size coat 42).
  • the distribution tool 50 can be configured to grossly bias the abrasive particles 250 to the desired upright, tilted orientation by forming the slot width Ws to be less than the particle maximum length and height L P2 , H P2 , and greater than the maximum thickness T P2 commensurate with the descriptions above.
  • the slot width Ws is sufficiently large so that the abrasive particles 250 can freely assume the tipped or leaning arrangement, such as by being 50% - 75% of the particle maximum height H P2 .
  • the slot width Ws can be more precisely calculated as based on geometry of the abrasive particle 250.
  • the height H minor of the first major face 252 can be measured.
  • the slot width Ws can then be determined as a function of the side face width W SF .
  • the slot width Ws must be equal to or greater than the side face width W SF plus a clearance dimension (designated as "C" in FIG. 11B ).
  • the slot width Ws can be calculated as: W S ⁇ W SF + C , or W S ⁇ T P2 / sin ⁇ + H minor ⁇ cos ⁇
  • the slot depth Ds is selected to approximate or be greater than the particle maximum height H P2 ( FIGS. 10A-10C ) so as to better ensure that individual ones of the abrasive particles 250 attain the desired gross biased orientation and are supported in this orientation as they traverse the corresponding slot 62.
  • Dimensions of the abrasive particles 250 can also be utilized to determine a size of the gap G between the lower side 64 of the distribution tool 50 and the backing construction web 24.
  • the gap G is sized so as to ensure that once in contact with the backing construction web 24, a portion of the abrasive particle 250 remains "within” the corresponding slot 62, supported by at least one of the corresponding walls 60.
  • the size of the gap G is 50 ⁇ 75% of the maximum height H P2 .
  • the distribution tool 50 is configured and arranged so that regardless of the particle Y P , Z P axes ( FIG. 4 ) rotational orientation of the abrasive particle 250 as it passes along the corresponding slot 62, the abrasive particle 250 is permitted to self-revert toward the "tilted" orientation, with one or more of the walls 60 supporting the abrasive particle in this tilted orientation.
  • the view of FIG. 12A represents various ones of the abrasive particles 250 falling through various ones of the slots 62 at a first point in time.
  • a first one of the abrasive particles 250a has having contacted the major face 38 of the backing construction web 24 at a rotational orientation in which none of the side faces 256-260 are parallel with the major face 38.
  • the abrasive particle 250a is not in the desired tilted orientation.
  • the abrasive particle 250a becomes at least partially secured to the make coat 30; however, a surface tension of the make coat 30 and other parameters allow the abrasive particle 250a to naturally tip.
  • FIG. 12B reflects this phenomena, illustrating the arrangement of FIG. 12A at a later point in time. More particularly, the abrasive particle 250a has self-reverted toward the desired "tipped" orientation, and is supported in this tipped arrangement via contact with one of the walls 60.
  • each one of the abrasive particles 250 will not necessarily be spatially located to achieve the final or complete tipped arrangement.
  • a second abrasive particle 250b is identified in FIGS. 12A and 12B .
  • the second abrasive particle 250b is dropping through the slot 62b in relatively close proximity to the wall 60.
  • the second abrasive particle 250b contacts the major face 38 of the backing construction web 24 ( FIG. 12A ), and then self-tips to the arrangement of FIG. 12B .
  • the second abrasive particle 250b comes into contact with the wall 60 prior to achieving the fully tipped arrangement (i.e., the side face 256 is not parallel with the major face 38).
  • the make coat 30 remains sufficiently fluid such that the second abrasive particle 250b is likely to self-transition to the desired tipped arrangement.
  • FIGS. 12A and 12B also illustrate that with the gross biased orientations dictated by the distribution tools of the present disclosure, the abrasive particles 250 can randomly assume different spatial arrangements within the prescribed particle Y P , Z P axes ranges.
  • a third abrasive article 250c is identified and is shown as being spatially arranged approximately 180 degrees (about the particle Z P axis) as compared to the first and second abrasive particles 250a, 250b.
  • the particle maximum length, height and thickness L P3 , H P3 , T P3 are designated for another exemplary abrasive particle 300 shape in FIGS. 13A-13C .
  • the shape of the abrasive particle 300 is akin to an isosceles triangular tapered prism.
  • the maximum length L P3 is greater than the maximum height H P3 .
  • the tapering geometry dictates that the length and height at a first major face 302 differ from an opposing second major face 304, with the maximum length and height L P3 , H P3 being found or measured at the second major face 304 as described above.
  • the maximum thickness T P3 is less than the maximum length and height L P3 , H P3 .
  • the distribution tool 50 can be configured such that the slot width W S is less than the particle maximum length L P3 , optionally less than the particle maximum height H P3 , but is greater than the particle maximum thickness T P3 .
  • the view of FIG. 14A illustrates one construction in which the slot width W S is less than the maximum height H P3 (and thus less than the maximum length L P3 ).
  • the abrasive particles 300 cannot enter any of the slots 62 whenever spatially arranged such that the maximum length L P3 or the maximum height H P3 is perpendicular to the length direction D L .
  • the slot width W S can be selected to be less than the particle maximum length L P3 but greater than the particle maximum height H P3 , permitting the abrasive particles 300 to more readily attain a spatial orientation appropriate for entering one of the slots 62.
  • the distribution tools of the present disclosure are useful with a plethora of abrasive particle shapes, such as any precision shaped grain currently available or in the future developed.
  • abrasive particle shapes such as any precision shaped grain currently available or in the future developed.
  • Non-limiting examples of other precision shaped grains or abrasive particles useful with the present disclosure include those described in U.S. Patent Application Publication No. 2009/0169816 entitled “Shaped, Fractured Abrasive Particle, Abrasive Article Using Same and Method of Making”; U.S. Patent Application Publication No. 2010/0146867 entitled “Shaped Abrasive Particles With Grooves"; U.S. Patent Application Publication No. 2010/0319269 entitled “Shaped Abrasive Particles With Low Roundness Factor”; U.S.
  • the methods of the present disclosure are also useful with more abstract or complex abrasive particle shapes (e.g., shards).
  • the particle maximum length, height and thickness L P4 , H P4 , T P4 are designated for another exemplary abrasive particle 320 shape in FIGS. 15A-15C .
  • the shape of the abrasive particle 320 is akin to a complex prism in which opposing faces 322, 324 have a random, complex shape.
  • the particle maximum length L P4 is greater than the particle maximum height H P4 .
  • the particle maximum thickness T P4 is less than the particle maximum length and height L P4 , H P4 .
  • the distribution tool 50 can be configured such that the slot width Ws is less than the maximum length L P4 , optionally less than the maximum height H P4 , but is greater than the maximum thickness T P4 .
  • abrasive particles include fused aluminum oxide based materials such as aluminum oxide, ceramic aluminum oxide (which may include one or more metal oxide modifiers and/or seeding or nucleating agents), and heat-treated aluminum oxide, silicon carbide, co-fused alumina-zirconia, diamond, ceria, titanium diboride, cubic boron nitride, boron carbide, garnet, flint, emery, sol-gel derived abrasive particles, and blends thereof.
  • the abrasive particles may be in the form of, for example, individual particles, agglomerates, abrasive composite particles, and mixtures thereof.
  • the backing 28 can be a flexible backing. Suitable flexible backings include polymeric films, metal foils, knitted fabrics, paper, vulcanized fiber, nonwovens, foams, screens, laminates, and combinations thereof.
  • the coated abrasive articles with a flexible backing may be in the form of sheets, discs, belts, pads, or rolls.
  • the backing 28 can be sufficiently flexible to allow the coated abrasive article to be formed into a loop to make an abrasive belt that can be run on suitable grinding equipment.
  • the make coat 30 and, where provided, the size coat 42 comprise a resinous adhesive.
  • the resinous adhesive of the make coat 30 can be the same as or different from that of the size coat 42.
  • resinous adhesives that are suitable for these coats include phenolic resins, epoxy resins, urea-formaldehyde resins, acrylate resins, aminoplast resins, melamine resins, acrylated epoxy resins, urethane resins and combinations thereof.
  • the make coat 30 or size coat 42, or both coats may further comprise additives that are known in the art, such as, for example, fillers, grinding agents, wetting agents, surfactants, dyes, pigments, coupling agents, adhesion promoters, and combinations thereof.
  • fillers include calcium carbonate, silica, talc, clay, calcium metasailicate, dolomite, aluminum sulfate and combinations thereof.
  • the methods of the present disclosure provide a marked improvement over previous designs.
  • Abrasive particles are randomly loaded on to the distribution tool. In passing through the distribution tool and becoming applied to a backing, the abrasive particles are caused to become grossly oriented and aligned, with minimal costs and restrictions on through put time. Further, the distribution tool supports the oriented and aligned abrasive particles for a dwell period, enhancing the likelihood that the abrasive particles will retain the biased orientation.
  • the distribution tools of the present disclosure are useful with any type or shape of abrasive particle, especially abrasive particles that are not well-suited for electrostatic coating.

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  • Manufacturing & Machinery (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Claims (7)

  1. Procédé de fabrication d'un article abrasif comprenant :
    le chargement de particules abrasives (36) sur un outil de distribution (50), l'outil de distribution incluant une pluralité de parois (60) définissant une pluralité de fentes (62), chacune parmi la pluralité de fentes (62) étant ouverte vers un côté inférieur (64) de l'outil de distribution (50) ; et
    la distribution de particules abrasives (36) à partir de l'outil de distribution (50) sur une face principale (38) d'une bande de construction de support (24) située immédiatement en dessous du côté inférieur (64) de l'outil de distribution (50) et le déplacement par rapport à l'outil de distribution (50) ;
    dans lequel au moins une majorité des particules abrasives (36) distribuées à partir de l'outil de distribution (50) subissent une séquence d'orientation de particules dans laquelle chaque particule abrasive (36) de l'au moins une majorité de particules abrasives (36) :
    a) entre dans une parmi la pluralité de fentes (62),
    b) passe partiellement à travers la fente correspondante (62) de telle sorte qu'une première partie de la particule abrasive est au-delà du côté inférieur (64) et en contact avec la face principale (38), et une deuxième partie de la particule abrasive est au sein de la fente (62),
    c) reste en contact simultané avec au moins une des parois (60) et la face principale (38) pendant une période de maintien durant laquelle la bande (24) se déplace par rapport à l'outil de distribution (50).
  2. Procédé selon la revendication 1, dans lequel l'étape de distribution de particules abrasives (36) inclut une pluralité des particules abrasives (36) simultanément au sein d'une respective parmi les fentes (62).
  3. Procédé selon la revendication 1, dans lequel l'étape de distribution de particules abrasives (36) inclut une pluralité de particules abrasives (36) simultanément en contact avec la face principale (38) et une première des parois (60) dans le cadre de la séquence d'orientation correspondante.
  4. Procédé selon la revendication 1, dans lequel l'étape de distribution de particules abrasives (36) inclut un vibrage de l'outil de distribution (50).
  5. Procédé selon la revendication 1, dans lequel chacune parmi la pluralité de fentes (62) définit une longueur (Ls) supérieure à une largeur (Ws) et à une profondeur (Ds), et dans lequel en outre l'outil de distribution (50) est agencé de telle sorte qu'une direction de la longueur (Ls) de chacune des fentes (62) est sensiblement parallèle à une direction machine (26) de la bande en mouvement (24).
  6. Procédé selon la revendication 1, dans lequel au moins 75 % des particules abrasives (36) distribuées à partir de l'outil de distribution (50) subissent la séquence d'orientation de particules.
  7. Procédé selon la revendication 1, dans lequel la séquence d'orientation pour au moins certaines des particules abrasives (36) inclut :
    la mise en contact initiale de la face principale (38) avec une première orientation spatiale ; et l'auto-ajustement à une deuxième orientation spatiale alors que la première partie reste en contact avec la face principale (38) et que la deuxième partie est au sein des limites de la fente correspondante (62).
EP16812269.5A 2015-06-19 2016-06-15 Procédé pour réaliser des articles abrasifs Active EP3310532B1 (fr)

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Families Citing this family (45)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL2797716T3 (pl) 2011-12-30 2021-07-05 Saint-Gobain Ceramics & Plastics, Inc. Kompozytowe ukształtowane cząstki ścierne i sposób ich formowania
KR102187425B1 (ko) 2011-12-30 2020-12-09 생-고뱅 세라믹스 앤드 플라스틱스, 인코포레이티드 형상화 연마입자 및 이의 형성방법
US8840696B2 (en) 2012-01-10 2014-09-23 Saint-Gobain Ceramics & Plastics, Inc. Abrasive particles having particular shapes and methods of forming such particles
EP3705177A1 (fr) 2012-01-10 2020-09-09 Saint-Gobain Ceramics & Plastics Inc. Particules abrasives dotées de formes complexes et méthodes pour former les mêmes
KR102534897B1 (ko) 2012-05-23 2023-05-30 생-고뱅 세라믹스 앤드 플라스틱스, 인코포레이티드 형상화 연마입자들 및 이의 형성방법
US10106714B2 (en) 2012-06-29 2018-10-23 Saint-Gobain Ceramics & Plastics, Inc. Abrasive particles having particular shapes and methods of forming such particles
US9440332B2 (en) 2012-10-15 2016-09-13 Saint-Gobain Abrasives, Inc. Abrasive particles having particular shapes and methods of forming such particles
KR101818946B1 (ko) 2012-12-31 2018-01-17 생-고뱅 세라믹스 앤드 플라스틱스, 인코포레이티드 미립자 소재 및 이의 형성방법
CN107685296B (zh) 2013-03-29 2020-03-06 圣戈班磨料磨具有限公司 具有特定形状的磨粒、形成这种粒子的方法及其用途
GB2513625B (en) 2013-05-01 2019-02-27 Oil States Ind Uk Ltd Anti-Rotation Device for Pipe String
CA3114978A1 (fr) 2013-09-30 2015-04-02 Saint-Gobain Ceramics & Plastics, Inc. Particules abrasives formees et leurs procede de formation
KR101870617B1 (ko) 2013-12-31 2018-06-26 생-고뱅 어브레이시브즈, 인코포레이티드 형상화 연마 입자들을 포함하는 연마 물품
US9771507B2 (en) 2014-01-31 2017-09-26 Saint-Gobain Ceramics & Plastics, Inc. Shaped abrasive particle including dopant material and method of forming same
MX2016013464A (es) 2014-04-14 2017-04-13 Saint-Gobain Ceram & Plastics Inc Articulo abrasivo que incluye particulas abrasivas conformadas.
ES2972193T3 (es) 2014-04-14 2024-06-11 Saint Gobain Ceramics Artículo abrasivo que incluye partículas abrasivas conformadas
WO2015184355A1 (fr) 2014-05-30 2015-12-03 Saint-Gobain Abrasives, Inc. Procédé d'utilisation d'un article abrasif comprenant des particules abrasives mises en forme
US9914864B2 (en) 2014-12-23 2018-03-13 Saint-Gobain Ceramics & Plastics, Inc. Shaped abrasive particles and method of forming same
US9707529B2 (en) 2014-12-23 2017-07-18 Saint-Gobain Ceramics & Plastics, Inc. Composite shaped abrasive particles and method of forming same
US9676981B2 (en) 2014-12-24 2017-06-13 Saint-Gobain Ceramics & Plastics, Inc. Shaped abrasive particle fractions and method of forming same
TWI634200B (zh) 2015-03-31 2018-09-01 聖高拜磨料有限公司 固定磨料物品及其形成方法
WO2016161157A1 (fr) 2015-03-31 2016-10-06 Saint-Gobain Abrasives, Inc. Articles abrasifs fixes et procédés pour les former
EP3307483B1 (fr) 2015-06-11 2020-06-17 Saint-Gobain Ceramics&Plastics, Inc. Article abrasif comprenant des particules abrasives profilées
WO2016205133A1 (fr) 2015-06-19 2016-12-22 3M Innovative Properties Company Article abrasif comprenant des particules abrasives présentant une orientation rotationnelle aléatoire à l'intérieur d'une plage
PL3455321T3 (pl) 2016-05-10 2022-12-12 Saint-Gobain Ceramics&Plastics, Inc. Sposób formowania cząstek ściernych
CN109462993A (zh) 2016-05-10 2019-03-12 圣戈本陶瓷及塑料股份有限公司 磨料颗粒及其形成方法
EP3519135A4 (fr) 2016-09-27 2020-06-10 3M Innovative Properties Company Article abrasif à couche ouverte et procédé d'abrasion
EP4349896A3 (fr) 2016-09-29 2024-06-12 Saint-Gobain Abrasives, Inc. Articles abrasifs fixes et procédés pour les former
US11534892B2 (en) 2016-12-21 2022-12-27 3M Innovative Properties Company Systems and methods for making abrasive articles
CN110198810A (zh) * 2017-01-19 2019-09-03 3M创新有限公司 可磁化磨料颗粒的磁性辅助转移及其相关的方法、装置和系统
WO2018136268A1 (fr) 2017-01-19 2018-07-26 3M Innovative Properties Company Manipulation de particules abrasives magnétisables avec modulation de l'angle ou de la force du champ magnétique
US10563105B2 (en) 2017-01-31 2020-02-18 Saint-Gobain Ceramics & Plastics, Inc. Abrasive article including shaped abrasive particles
US10759024B2 (en) 2017-01-31 2020-09-01 Saint-Gobain Ceramics & Plastics, Inc. Abrasive article including shaped abrasive particles
WO2018236989A1 (fr) 2017-06-21 2018-12-27 Saint-Gobain Ceramics & Plastics, Inc. Matériaux particulaires et leurs procédés de formation
WO2020128719A1 (fr) 2018-12-18 2020-06-25 3M Innovative Properties Company Article abrasif revêtu ayant des particules d'espacement, procédé de fabrication et appareil associé
CN113226647A (zh) 2018-12-18 2021-08-06 3M创新有限公司 具有不同加工速度的磨料制品制造机
WO2020128842A1 (fr) 2018-12-18 2020-06-25 3M Innovative Properties Company Ensemble de transfert de particules abrasives mises en forme
CN113195164B (zh) 2018-12-18 2023-08-18 3M创新有限公司 带涂层磨料制品及制备带涂层磨料制品的方法
WO2020128853A1 (fr) 2018-12-18 2020-06-25 3M Innovative Properties Company Réceptacle d'épissure d'outillage pour la production d'articles abrasifs
WO2020128720A2 (fr) 2018-12-18 2020-06-25 3M Innovative Properties Company Réception améliorée de particules lors de la création d'articles abrasifs
BR112021015764A2 (pt) 2019-02-11 2021-10-05 3M Innovative Properties Company Artigo abrasivo
CN114901430A (zh) 2019-12-09 2022-08-12 3M创新有限公司 带涂层磨料制品及制备带涂层磨料制品的方法
KR20220116556A (ko) 2019-12-27 2022-08-23 세인트-고바인 세라믹스 앤드 플라스틱스, 인크. 연마 물품 및 이의 형성 방법
WO2021152444A1 (fr) 2020-01-31 2021-08-05 3M Innovative Properties Company Articles abrasifs revêtus
WO2022023845A1 (fr) 2020-07-30 2022-02-03 3M Innovative Properties Company Article abrasif et procédé de fabrication associé
WO2022034443A1 (fr) 2020-08-10 2022-02-17 3M Innovative Properties Company Articles abrasifs et leur procédé de fabrication

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1857340A (en) 1929-01-05 1932-05-10 Minnesota Mining & Mfg Abrasive article
US20030207659A1 (en) 2000-11-03 2003-11-06 3M Innovative Properties Company Abrasive product and method of making and using the same
US6669745B2 (en) 2001-02-21 2003-12-30 3M Innovative Properties Company Abrasive article with optimally oriented abrasive particles and method of making the same
US20060254154A1 (en) * 2005-05-12 2006-11-16 Wei Huang Abrasive tool and method of making the same
US7344574B2 (en) 2005-06-27 2008-03-18 3M Innovative Properties Company Coated abrasive article, and method of making and using the same
US7503949B2 (en) 2005-09-01 2009-03-17 3M Innovative Properties Company Abrasive article and method
US20080102720A1 (en) 2006-10-30 2008-05-01 3M Innovative Properties Company Abrasive article and method of making and using the same
EP2111326A4 (fr) 2006-12-20 2013-01-16 3M Innovative Properties Co Disque abrasif enduit et son procede de fabrication
CN100563935C (zh) * 2007-05-23 2009-12-02 江苏天一超细金属粉末有限公司 一种使磨料颗粒均匀分布/有序排列/择优取向的方法和装置
WO2009085841A2 (fr) 2007-12-27 2009-07-09 3M Innovative Properties Company Particules abrasives formées fracturées, article abrasif les utilisant, et leur procédé de fabrication
US20090325466A1 (en) 2008-06-30 2009-12-31 3M Innovative Properties Company Coated abrasive articles and methods of making and using the same
US10137556B2 (en) 2009-06-22 2018-11-27 3M Innovative Properties Company Shaped abrasive particles with low roundness factor
JP5525546B2 (ja) 2008-12-17 2014-06-18 スリーエム イノベイティブ プロパティズ カンパニー 溝を有する成形された研磨粒子
US8142531B2 (en) 2008-12-17 2012-03-27 3M Innovative Properties Company Shaped abrasive particles with a sloping sidewall
US9447311B2 (en) 2009-12-02 2016-09-20 3M Innovative Properties Company Dual tapered shaped abrasive particles
RU2539246C2 (ru) 2010-04-27 2015-01-20 3М Инновейтив Пропертиз Компани Керамические формованные абразивные частицы, способы их получения, и абразивные изделия, содержащие их
US8551577B2 (en) * 2010-05-25 2013-10-08 3M Innovative Properties Company Layered particle electrostatic deposition process for making a coated abrasive article
BR112013001831B8 (pt) 2010-08-04 2021-05-04 3M Innovative Properties Co partículas abrasivas formatadas
BR112013019401B1 (pt) * 2011-02-16 2021-09-28 3M Innovative Properties Company Artigos abrasivos revestidos
US9440332B2 (en) * 2012-10-15 2016-09-13 Saint-Gobain Abrasives, Inc. Abrasive particles having particular shapes and methods of forming such particles
CN107685296B (zh) 2013-03-29 2020-03-06 圣戈班磨料磨具有限公司 具有特定形状的磨粒、形成这种粒子的方法及其用途
DE102013212684A1 (de) 2013-06-28 2014-12-31 Robert Bosch Gmbh Verfahren zur Aufbringung von Schleifkörnern auf eine Schleifmittelunterlage
DE102013212609A1 (de) 2013-06-28 2014-12-31 Robert Bosch Gmbh Verfahren zur Herstellung eines Schleifmittels

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

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BR112017027505A2 (fr) 2018-08-21
US20180318983A1 (en) 2018-11-08
EP3310532A4 (fr) 2019-02-20
BR112017027505B1 (pt) 2021-11-16
EP3310532A1 (fr) 2018-04-25
JP2018520895A (ja) 2018-08-02
CN107820455B (zh) 2020-06-12
JP6913637B2 (ja) 2021-08-04
PL3310532T3 (pl) 2022-01-17
CN107820455A (zh) 2018-03-20
WO2016205267A1 (fr) 2016-12-22
US10773361B2 (en) 2020-09-15

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